        <?php
			$result = "SELECT * FROM tt_clase  ";
			$res = $mysqli->query($result);
			if ($res) {
			while($row = $res->fetch_assoc()) {
			?>
			<option value=<?php echo ( $row["ClaseID"]  )?> > <?php echo ($row["ClaseTxt"]) ?></option>
			
			<?php }
			$res->close();
			$mysqli->check_result();
			}   
?>